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Field Type Null Default Default is NULL On Update
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f1 INTEGER TRUE TRUE
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show indexes from t1;
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Table Key_name Seq_in_index Column_name
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Table Unique Key_name Seq_in_index Column_name
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create table t1(f1 varbinary(32), f2 varbinary(64));
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select character_maximum_length, character_octet_length
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or DATA_TYPE = 'varchar')
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group by DATA_TYPE order by DATA_TYPE, num;
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DATA_TYPE group_concat(table_schema, '.', table_name) num
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VARCHAR data_dictionary.CHARACTER_SETS,data_dictionary.CHARACTER_SETS,data_dictionary.CHARACTER_SETS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.GLOBAL_STATEMENTS,data_dictionary.GLOBAL_STATEMENTS,data_dictionary.GLOBAL_STATUS,data_dictionary.GLOBAL_STATUS,data_dictionary.GLOBAL_VARIABLES,data_dictionary.GLOBAL_VARIABLES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_d 106
196
VARCHAR data_dictionary.CHARACTER_SETS,data_dictionary.CHARACTER_SETS,data_dictionary.CHARACTER_SETS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLLATIONS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.COLUMNS,data_dictionary.GLOBAL_STATEMENTS,data_dictionary.GLOBAL_STATEMENTS,data_dictionary.GLOBAL_STATUS,data_dictionary.GLOBAL_STATUS,data_dictionary.GLOBAL_VARIABLES,data_dictionary.GLOBAL_VARIABLES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEXES,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_dictionary.INDEX_PARTS,data_d 110
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Warning 1260 1 line(s) were cut by GROUP_CONCAT()
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create table t1(f1 char(1) not null, f2 char(9) not null);